gif 中蒙板的默认背景是半透明黑色，实际使用是半透明白色。

[zhaiyong4118]

drawbitmap里面添加了一个paint后修复了这个问题

@Override
protected void onDraw(Canvas canvas) {
    super.onDraw(canvas);
    if (mChangedHeight != 0) {
        mTargetRect.offset(0, mChangedHeight);
        mInitHeight = mInitHeight + mChangedHeight;
        mChangedHeight = 0;
    }
    mEraserBitmap.eraseColor(Color.TRANSPARENT);
    mEraserCanvas.drawColor(mFullingPaint.getColor());
    if (!mOverlayTarget) {
        switch (mStyle) {
            case Component.ROUNDRECT:
                mEraserCanvas.drawRoundRect(mTargetRect, mCorner, mCorner, mEraser);
                break;
            case Component.CIRCLE:
                mEraserCanvas.drawCircle(mTargetRect.centerX(), mTargetRect.centerY(), mTargetRect.width() / 2, mEraser);
                break;
            default:
                mEraserCanvas.drawRoundRect(mTargetRect, mCorner, mCorner, mEraser);
                break;
        }
    }
   // 这里我添加了一个paint，貌似修复了这个问题
    canvas.drawBitmap(mEraserBitmap, mOverlayRect.left, mOverlayRect.top, paint);
}

[binIoter]

你把Bitmap.Config.ALPHA_8 改成 Bitmap.Config.RGB_565 试一下

[mhyc666]

mEraserBitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);//就可以了

[aiynmm]

给你一个赞! @mhyc666

[SKYLZH]

@aiynmm 大大的攒